<template>
    <div>
        <input type= button value="+1" @click="addNum"/> 
        {{num}}
        <input type= button value="-1" @click="subNum"/> 
    </div>
</template>
<script>
export default {
    data() {
        return {num: 0};
    },
    methods: {
        addNum() {
            this.num++
        },
        subNum() {
            this.num--;
        },
    },
};
</script>
<style>
    
</style>